API / function to flush IHDB?

Community Support
1

Hello again,

Is there a function that I can call from an IHDB  process (or even from the LR) to flush it to the HDB?

The background is:

  • my EOD time is 10 am

  • I had some data on my IDHB on 26/07/2021 around 2pm

  • But then, my machine was not running on 27/07/2021 at EOD time, therefore the data still exists on the log files but obviously not in the HDB.

So how do I flush that data from the logs to the HDB?

Cheers,
Adriano

2

Hi Adriano!

This is an issue not only in IHDBs but RDBs i.e. if EOD is missed due to downtime then not only is the old data never pushed to HDB but it’s no-longer loaded to the RDB (because a new log file is made).

As a custom solution to this issue you could

  • check for this scenario on startup
  • playback the previous log file (I’m not very familiar with IHDBs but I imagine there’s an equivalent) https://code.kx.com/q/kb/replay-log/
  • EOD with the appropriate date 

Obviously this falls apart when the process is off for more than a day (you could loop through each missed log file I suppose), but hope that helps!

Josh

3

Thanks, Josh. I will have a look and come back here if I have any questions
Cheers,
Adriano

4

Hi Adriano,

You could call the function **dxFinalRecoveryIntraday **from LR process to explicitly flush data from IHDB to HDB.

You might need to run the following code first before calling the function:

.al.getfunction`dxFinalRecoveryIntraday